(19)

(11)

EP 3 420 568 A1

(12)

(43) Date of publication: 02.01.2019 Bulletin 2019/01 (21) Application number: 17702917.0 (22) Date of filing: 25.01.2017

(51) International Patent Classification (IPC):  H01F 3/10(2006.01) H01F 27/28(2006.01) (86) International application number: PCT/GB2017/050190 (87) International publication number: WO 2017/144848 (31.08.2017 Gazette 2017/35)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: MA MD (30) Priority: 24.02.2016 GB 201603209 (71) Applicant: Eaton Intelligent Power Limited Dublin 4 (IE)	(72) Inventor: ESPOSITO, Frederic Vladimir Luton LU2 7QB (GB) (74) Representative: WP Thompson  138 Fetter Lane London EC4A 1BT London EC4A 1BT (GB)